Machine for making paper boxes



July 12, 1932. J G055 MACHINE Foiz MAKING PAPER BOXES Filed May 50, 19304 Sheets-Sheet 1 J2: we; :3 0 a" Ha mad? flow 5a 0M0 raaqy July 12,1932. 055 1,867,259

MACHINE FOR MAKING PAPER BQ XES Filed May 50. 1930 4 Sheets-Sheet 2 aJJflZZ 91 2'2 '12 91 1920a vio a Hwi'oidJ 60w July 12, 1932. H. J. sossMACHINE FOR MAKING PAPER BOXES Filed-May 30. 1930 4 Sheets-Sheet 3 July12, 1932. G985 1,867,259

MACHINE FOR MAKING PAPER BOXES Filed ma 30, 1930 4 Sheets-Sheet 4 Q w aQ $4 Q sax R ama'za'ey Patented July 12, 1932 UNITED STATES PATENTOFFICE HAROLD J. GOSS, OF NASHUA, NEW HAMPSHIRE, ASSIGNOB TO THEINTERNATIONAL PAPER BOX MACHINE COMPANY, OF NASHUA, NEW HAMPSHIRE, A.CORPORATION OF KAINE MACHINE FOR MAKING PAPER BOXES Application filedMay 30, 1930. Serial No. 457,638.

10 machine are of a type known as berry boxes the side walls of whichare not parallel, but

diverge. In fact the present machine is especially adapted to make boxessuch as illustrated in Figure 8 of the drawings herewith.

In boxes for containing berries, it is not practical to employ adhesivefor holding the overlapped portions together because the moisture of theberries, or the juice thereof or of other fruits, will so soften theadhesive that the boxes lose their shapes. And such adhesive is liableto impart a disagreeable flavor to the fruits. Therefore, one of theobjects of the present invention is to provide a machine forautomatically making boxes suitable for containing berries or otherfruits, the material being paper-board preferably waxed, the saidmachine having means for securing the overlapped wall members togetherby metallic fastenings instead of such adhesive as is usually employedfor most types of paper-board set-up or wall boxes.

With said object in view, and others hereinafter explained, theinvention consists in the construction and combinations of partssubstantially as hereinafter described and claimed.

Of the accompanying drawings:

Figure 1 is a side elevation of the machine.

Figure 2 is an end elevation looking from the right of Figure 1. i

Figure 3 represents a vertical section on line 3-3 of Figure 2, on alarger scale.

Figure 4 is a plan view of the delivery end of the machine.

Figure 5 represents a detail horizontal section on line 5-5 of Figure 2.

Figure 6 is a detail view of parts of a signalling mechanism hereinafterreferred to.

Figure 7 is a plan view of one of the spe- I cial blanks operated on bythe machine.

Figure 8 is a perspective view, partly broken out, of one of the boxesmade by the ma-, chine.

Figure 9 is a diagram of certain electric connections hereinafterdescribed.

Similar reference characters, designate similar parts or features in allof the views.

The frame of the machine is illustrated at 15. A suitable table for apile of blanks to be acted upon is illustrated at 16 (Fig. 1). From saidtable the blanks are fed singly and successively by a combing wheel 17carried by a shaft 18, said blanks then passing between upper and lowerguide strips 19, 20, and onto a pair of carrier chains 21 having spacedpins 22 to engage the rear edges of the blanks to carry them along tothe folding and stitching mechanism of the machine. The chains 21 aremounted on sprockets carried by the shafts 23, 24. The mechanism as sofar described is practically the *same as in Letters Patent No.1,563,184, issued to me November 24, 1925, and therefore detaileddescription and illustration thereof, and the driving mechanismtherefor, is unnecessary herein. Also certain blank pushing membersutilized in the machine of said patent are employed herein and form noparts of the mechanism claimed herein.

As the machine is designed especially to convert blanks such asillustrated by Figure 7, to the set-up box form" illustrated by Figure8, the blank and box will now be briefly described before proceedingwith the description of the machine.

The blanks are cut and creased so that each has a central portion a(Fig. 7), two opposite wall sections 1) with foldable edge flaps c, andtwo opposite wall sections (1 each having flaps e. Usually thelongitudinal margins of the wall sections d are doubled as indicated inFigure 7, but this is not essential. Preferably the blanks are slittedas atff's'o that when folded or setup (Fig. 8) the slitted portions willprovide short legs extendingbelow the bottom of the box. The stitches orwire staples as hereinafter described are applied as indicated at g inFigure 8.

Returning to Figure 1, each blank fed by the combing wheel 17 and beingcarried along by a pair of pins 22 of the two chains, is first 28 to theinner sides of the two converging rods 30 (Figs. 1 and 4). Said rods 30are adjustably mounted in order that they may be secured in fixedpositions to ensure breaking of the flaps 6 down to a nearly verticalposition as they travel. The longer but narrower flaps 0 however, whichhave been partly broken by the segments 26, merely to ensure latercorrect folding on their crease lines, pass along above the rods 30,(Fig. 1).

For the correct operation of the machine it is important that all partsthereof shall operate at proper relative times, and of course thedriving and gearing mechanism is mechanically designed to provide forproper timing of the folding and stitching mecha-. nisms relatively tothe timing of the blank feeding mechanism and the speed of travel of theblanks being fed and carried to the folding and stitching mechanisms,Such time gearing is well known in machines of this general type andtherefore detailed illustration and description thereof would besurplusage herein. For some reasons however, especially when the blanksare coated with waxy material, it will sometimes happen that a blankdoes not travel along in correct time. To announce any blank that ismoving along-out of time, I provide a safety device consisting of alight lever 31 which, as will be presently explained, acts as a switchto effect an alarm if a blank' is travelling along to the folding andstitchingrmechanisms out of time. Said lever 31 is mounted, properlyinsulated, in a block 32 pivotally supported on a rod 33 and having oneend bent in at 34 (Fig. 4) and having a downwardly inclined tip 35(Figs. 1 and 9), said inclined tip'35 normally extending slightly.across the plane of travel of every blank flap 0. The other end 36 ofthe lever 31 is-bent tdextend over a grounded "notched disk 37 fizarrledby the shaft 24 which rotates once for each blank being fed. The lever31 is electrically connected with one end of an insulated wire 38 which,through connections to be described, effects an alarm so that theattendant can stop the machine.

The lever 31 is somounted that it may rock freely but with its longerend-down so that its inclined tip 35 will be acted upon by every passingblank and lifted. If every blank passes said tip 35 and rocks or tiltsthe lever while the recess or notch in the revolving disk 37 isuppermost, the other end 36 of the lever' the larger diameter of thegrounded notched disk 37 is under the end 36 of the lever, con tact ismade between said lever and disk and the circuit is completed through aportion of the lever 31, the wire 38 and other connections presentlydescribed, to ring a bell 39 (Figs. 2 and 9).

The wire 38 is connected to a bell-ringing transformer 40 having anotherconnection 41 with the bell and having connections 42, 43, with asuitable electric power line The bell has a suitable ground connection44.

I do not limit myself to the employment of an alarm bell to notify anattendant to stop the machine, as any well-known electricallyoperatedmechanism for effecting automatic stoppage of the machine may besubstituted therefor.

Each blank pushed to position to be operated upon as presentlydescribed, enters between two side guides 45 (Figs. 2, 3, 4 and 5), andis arrested by stops 47 supported by a tie rod 46.

Plunger mechanism for operating in an upward direction on each blankconsists of members similar to the duplex plunger mechanism of thePatent No. 1,563,184 hereinbefore referred to.

(Figs. 2 and 3) has its stem or shank 49 guided between the two membersof the stem of the lower plunger presently described, said stem 49 beingconnected by a link 50 with an arm 51 of a rock shaft 52, the latterhaving another arm 53 carrying a roll bearing against a cam 54 securedto shaft 55. The lower The upper form 48 suitable slideway bearings,said stem members being connected by links 58 with arms 59 of a rockshaft 60,- the latter having another arm 61 carrying a roll bearingagainst a cam 62 secured to the shaft 55.

To operate as presently described, two up.- right tucker plates 63,having inwardly bent upper ends (Figs. 2 and 3), are carried by rods orstems 64 projecting inwardly from the upper ends of two arms 65 pivotedat 66 to blocks mounted on a tie rod 67. A spring 68 connects the twoarms 65, and each arm has a small roll 69 acted upon by a recessfacedcam 7 0 carried by the shaft 71.

The upright forming chamber comprises four strips 72 angular in crosssection (Figs. 1, 2, 3 and 4), said strips being rigidly supported bybrackets 73 mounted on tie rods 74. Said strips have openings 75throughwhich thefour stitchers hereinafter referred to 0perate. Abovesaid openings (Fig. 3) is a slide 76 mounted to reciprocate in one ofthe brackets 7 3 and connected by a link 77 with the upper end of alever 78 secured to a rock shaft 79 mounted in hangers 8O fixed to anddepending from the tie rod 46. The rock shaft 79 has an arm 81 providedwith a roll 82 which is acted upon by a cam 83 carried by the shaft 71.Said cam acts to shift the slide 76 outwardly at the proper times, whilea spring 84 connecting the arm 81 with a suitable fixed point effectsinward movement of the slide to temporarily provide a limit to which ablank that is being operated upon can be elevated in the formingchamber, as,

presently described. The operation of the plunger forms will now bedescribed before 7 describing the stitchers Vhen a blank arrives againstthe stops 47 its central portion a is above and registers with thesurface of the upper plunger form 48 which then rises into the formingchamber to a height that carries said central portion a of the blankpractically against the slide 76 which is then in the positionillustrated in Figure 3. During such movements, the wall sections I),(Z, of the blank are turned on their broken crease lines in a downwardlyfolded direction due to their contact with the plunger form 56. Thetuckers retreat as the form 56 continues to rise, said form then foldingthe flaps .g snugly against the inner surfaces of the 6 (Fig. 8) readyfor the stitching to be effected as presently described. During theupward movement of the lower form '56 the temporary presence of theslide 76 in the position illustrated in Figure 3 prevents the partlvfolded blank on the upper form 48 from being pushed'up away from thelatter by the entrance of the lower form into said blank to complete thefolding. 7

As illustrated by Figure 4, the slide 76 is not wide. Therefore, tosomewhat supplement its box-arresting function, I provide two smallrolls 85 in opposite spaces in the sides of the forming chamber (Figs. 3and 4), each roll being carried by a frame or'arm 86 pivotally mountedon a cross pin 87. Suitable springs such as illustrated at 88 in Figure1 are employed to cause the two opposite rolls 85 to yieldingly occupypositions slightly within the area of the forming chamber so thatopposite bottom corners of the inverted box will contact with saidrolls, the latter thereby resisting tendency of the box to be pushed upbefore the stitching operation is effected. After such stitchingoperation the slide 76 is shifted outwardly, and when a completed box isbeing later pushed up through the forming chamber, the rolls 85 yield topermit it to pass. The rolls are short and so located that when a box isrising, the leg members of the latter pass without contact with saidrolls and therefore are not injured thereby.

There are four stitcher heads 89 (Figs. 2 and 4) which operate throughthe openings 75 in the forming chamber 72 (Fig. 3). The details thereof,including the wire feeding and the cutting and shaping of the wire areso well-known that illustration and description of such details areunnecessary herein. Said mechanism employed in the present machine isthe well-known Bostitch.

Each head 89 is supported by a bracket 90 mounted on tie rod 74. Theheads are adjustably mounted independently to vary their distance apartto suit different sizes of boxes, and are adjustable tiltably to suitthe angle or slant of the side walls of the box according to the shapesof the boxes. And of course different shapes of plunger heads or forms48 56, may be employed for the making of boxes of different sizes andshapes as to the slant of the side walls.

The wire a: for each stitcher is supplied from a reel 91 mounted on abracket 92 suitably supported by the frame of the machine, and leadsalong a flexible guide 93 to the actuating mechanism of the stitcher,and the two stitcher mechanisms at each side of the machine (Figs. 1 and2) have actuating rods 94 connected with the upper end of a lever 95.

Each lever 95 is duplex, its members being secured to a rock shaft 96havingan arm 97 provided with a roll bearing agamsta face cam 98 of theshaft 55. To impart inward movement to the stitchers, when permitted byg the cams 98, each.lever 95 is actuated inwardly by a spring 99connected at its inner v Figure 2, the inner ends of the two springs 99are. connected to the upper ends of upright fixed arms 101 secured tothe tie rod 67.

To cooperate with the stitching mechanisms carried by the stitcher heads89, anvil blocks 102 are mounted on the sides of the lower plunger form56. In practice, sa d anvil blocks are adjustably mounted on said form56 to properly cooperate with the mechanism of the stitcher heads whenthe latter are adjusted.

The time of operation of the stitchers is when the lower plunger formhas followed the upper plunger form intothe forming chamber and theblank has been completely converted to the set-up box conditionillustrated by Figure 8 in which figure the stitches also areillustrated at 9. After the box has been stitched, it remainsfrietionallyin the forming chamber and is pushed upward in the latterwhen the next box is formed and.

stitched. The boxes nest one within another in the chamber 72 and when anumber of them protrude from the top of said chamber they are removed byan attendant.

To enable the machine to be stopped if any one of the wires a: fails tofeed correctly, I provided the following mechanism ;or devices :Mountedon the brackets 90 are small blocks 103 of insulating material (Fig. 6)there being four of them as illustrated in Figure 4. A finger 104 ispivotally supported at 105 on one of the insulating blocks 103 at eachside of the forming chamber (Fig. 4), and the other end of the fingerhas a screw 106 bearing on the other block 103 of the pair. Mounted ineach finger 104 and extending downwardly therefrom are two pairs ofdetector wires 107, each pair of said wires terminating at oppositesides of the normal position of a stitching wire 00 and slightly spacedtherefrom (Fig. 6). Each finger 104 is connected by a conducting wire108 with the wire 38 (Fig. 9).

Normally the stitching wires are straight where they pass along throughthe stitcher heads 89 and there will be no contact with either of thedetector wires 107. But if a wire m breaks or otherwise fails to feedcorrectly, it will make contact with one or the other of the adjacentdetector wires and close the circuit through the finger 104 and the wire108 and the other connections illustrated in Figure 9 and hereinbeforedescribed, and ring the bell 39. This is because the stitching wires :0are grounded by the parts of the machine through which they travel. Thereason for the fingers 104 being pivoted is to enable either of them tobe lifted up to facilitate ac cess to any wire :0 that needs attentionbefore resuming operation of the machine.-

In order that the machine may continue to run but the stitchersprevented from operating if no folded blank is in the forming chamber inposition to be stitched, I provide the following mechanism :-A finger109 (Fig. 3) secured to a rock shaft 110, extends from said shaft in anupwardly inclined direction through the space between two of the angularsections of the forming chamber, the upper end of said finger beingcurved to offer no appreciable resistance to the upward passage of abox. the width of the machine and has an arm 111 at each end (Figs. 1and 2) said arms being movable as presently described to serve asobstacles to the inward movement of the stitchers. As has beenexplained, the inward movement of the -stitchers is effected bythesprings 99. As shown in Figure 1, a cross bar connects the two levermembers 95. A stop pin 112 projects inwardly from said cross bar. Thisstructure is duplicated at both sides of the machine (Fig. 2) As illus-The rock shaft 110 extends across trated by comparing Figures 1, 2 and3, every folded blank arrivingin the forming chamber in position to bestitched will swing the finger 109 outwardly and, through the rock shaft110, swing the arms 111 up above the line of inward movement of the stoppins 112 carried by the stitcher actuating lever. But if there is nofolded blank in the forming chamber to be acted upon by the next inwardmovement of the stitcher heads, the finger 109 remains in the inwardposition shown in Figure 3 and the arms 111 of the rock shaft remaindown as in Figure 2 so that, although the machine may be still underpower, said arms 111 will be in positions to serve as obstacles againstwhich the stop pins 112 will abut, and arrest the operation ofthestitchers. But as soon as a folded blank is supplied to its upperposition between the openings 7 5 in the forming chamber, its presenceswings the finger 109 out, resulting in the rock-shaft arms 111 shiftingup so that the stop pins 112 can not contact therewith. Then thelevers95, which are drawn in by the springs 99 to actuate the stitchers, arefree to act.

I do 'not claim herein the electrical indicating means,.as the sameforms the subject matter of my divisional application filed September 5,1931, Serial No. 561,373.

Having now described my invention, I

1. In a machine for making boxes, a forming chamber, upper and lowerplungers, means for actuating the upper plunger to cause it to lift ablank into said chamber, tuckers for acting on side portions of theblank, means for actuating the lower plunger to cause it to follow theupper plunger, a slide movable to and from position to cause it totemporarily hold the blank on the upper 1 plunger during the rise of thelower plunger, and stitching mechanism cooperating with the sides of thelower plunger.

2. In a box-making machine having a forming chamber, duplex 'plungersmovable into and from said chamber, a slide movable folding, andstitching mechanism cooperat-- ing with said plunger side faces tosecure folded portions of the blank together.

4. A machine of the character described having means for folding blanksto set-up form and means for stitching them, means being provided forpreventing the operation of the stitching mechanism if no blank is inposition to be stitched.

5. A. machine for making boxes, said .machine having a form andmeans forfolding blanks successively thereon, reciprocatin stitching mechanismsat o posite sides 0 the form, means for deliverlng blanks to the foldingand stitching mechanisms, and means for preventing movement of thestitching mechanisms toward the form during any in t-erruption in thesupply of blanks to position to be stitched.

6. A machine for making boxes, said machine having a form and means forfolding blanks thereon, reciprocating stitching mechanisms havingsprings connected thereto to actuate them toward the form, means fordelivering blanks successively to the folding and stitching mechanisms,a rock shaft having arms movable to and from position to prevent inwardmovement of the stitching mechanisms or to permit such movement, and afinger projecting from said rock shaft into the path of travel. of theblanks toward position to be stitched.

lntestimony whereof I have aflixed my' signature.

-HAROLD J. GOSS.

